FIR: Do not add alias for variables with explicit type

compiler/testData/diagnostics/tests/generics/projectionsScope/kt7296.fir.kt

@@ -10,5 +10,5 @@ fun main() {
     val c : ListOfLists<*> = b
     val d : ArrayList<ArrayList<*>> = <!INITIALIZER_TYPE_MISMATCH!>c.x<!>
 
-    c.x checkType { <!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>_<!><ArrayList<out ArrayList<*>>>() }
+    c.x checkType { _<ArrayList<out ArrayList<*>>>() }
 }

compiler/testData/diagnostics/tests/generics/suppressVarianceConflict.fir.kt

@@ -1,17 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
-
-class A<out T, in E> {
-    fun foo(x: @UnsafeVariance T) {}
-    fun foo(x: @UnsafeVariance T, y: List<@UnsafeVariance T>): @UnsafeVariance E = null!!
-
-    fun bar(): List<@UnsafeVariance E> = null!!
-}
-
-fun foo(x: A<String, Any?>, cs: CharSequence, ls: List<CharSequence>) {
-    val y: A<CharSequence, String> = x
-
-    y.foo(<!ARGUMENT_TYPE_MISMATCH!>cs<!>)
-    val s: String = <!INITIALIZER_TYPE_MISMATCH!>y.foo(<!ARGUMENT_TYPE_MISMATCH!>cs<!>, <!ARGUMENT_TYPE_MISMATCH!>ls<!>)<!>
-
-    val ls2: List<String> = <!INITIALIZER_TYPE_MISMATCH, TYPE_MISMATCH!>y.bar()<!>
-}

compiler/testData/diagnostics/tests/generics/suppressVarianceConflict.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
 
 class A<out T, in E> {